Magazine spring-drill.



Patented oct. 29, |901.

Z. T. FURBISH.

MAGAZINE SPRING DRILL.

(Application filed Feb. 2B. 1901.]

(No Model.)

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NIIED STATES PATENT OFFICES.

ZACI-IRY T. FURBISH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NORTHBROTHERS MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA,CORPORATION OF PENNSYLVANIA.

MAGAZINE SPRING-DRILL..

SPECIFICATION forming part of Letters Patent No. 685,678, dated october'2e, 1901'. Application filed February 28, 1901f Serial No. 49,269. (Nomodel.)

To all whom, it may concern/.-

Beit known that I, Z'AOHRY T. FURBISH, a citizen of the United States,residing in Philadelphia, Pennsylvania, haveinvented certainImprovements in Magazine Spring-Drills, of which the following isaspecification.

The object of my invention is to so construct a spring-drill that thedrill-bits can be carried in the handle of the tool. This object Iattain in the following manner, refer ence being had to the accompanyingdrawings, in Which-- Figure l is a side View of my improved magazinespring-drill. Fig. 2 is a longitudinal sectional view showing themagazine closed. Fig. 3 is a view similar to Fig. 2, showing themagazine open. Fig.` 4 is a plan view on the line 4 4, Fig. 2; and Figs.5 and 6 are views of details of my invention.

A is the cap of the handle, to which is attached the spindle B, having aspiral groove b, in which travels a nut c on the tubular stem C. Betweenthe endof this spindle B and a plug e is a spring E, which tends to keepthe tubular stem normally extended, as shown in the drawings. The stem Cslides within a casing D, screw-threaded at its upper end and arrangedto screw into the cap A, so that the cap, casing,- and stem are allsecured together.

At the lower end of the tubular stem C is a chuck F, secured to thesleeve by a screw or pin c. This chuck may be constructed in anysuitable manner to hold a drill-bit rigidly to the spindle;

Arranged to slide on the easing D is'a casing G, and this casing isreduced at its lower end, forming a neck g, which snugly lits the easingD, and this neck is screwethreaded.

H is a screw-threaded collar arranged to screw on the neck g of thecasing G, and within this collar is a split spring-ring h. (Shown inFig. 5.) The' ring is arranged to lit in a groove d in the casing D, soas to retain the casing G in its closed position. By simply unscrewingthe collar H the ring will be released and the casing G can be moveddown upon a casing D, so as to expose the drill-bits within the pocketst' between the casings G and D.

A ribbed frame I, made in the present iu stance of sheet metal, isshaped to form the pockets t', as illustrated in Figs. 4 and G', and

-it is bent to t snugly the casing G and around the collar H.

Supporting the drills is a platform J, having a tubular stem j, fittingthe casing D, and between the platform and the reduced portion of theeasing G is a spring J', which tends to project the ends of thedrill-spindles beyond the casing G when the said casing is lowered, asin Fig. 3. In closing the casing to the position shown in Fig. 2 thespring J is compressed, so that. on releasing the casing by unscrewingthe collar H the spring J will force the easing G down to eX- pose thedrill-bits.

In order to prevent the handle turning when in its closed position, Inotch the casing G at g and make a projection a on the cap A.

The cap A in the present instance is made in two pieces, ct' being thecap proper, having a serew-threaded portion which is screwed onto theportion a2, and the pins a extend into the portion a2, as shown in Fig.2. The upper end of the vspindle is screwed into the portion a2 and hasa shoulder, as shown, and there is a loose washer ai between thisshoulder and the portion a2 of the cap.v

In the present instance the spindle B is hung within the stem from a pinb', mounted in the cap A, and there is sufticient play to allow thespindle to accommodate itself to the l nut c on the stem C.

The projection of the spindle is limited by a head b2 on the spindle B,and the nut c is held in place by a screw-plug c2, screwed into the endof the hollow spindle.

By the construction shown it will be seen that I am enabled to make avery simple and convenient spring-drill, in which the main spring andthe rod with a spiral groove there; in is mounted within a casing, whilethe drill' bits are mounted in a second casing arranged to slide uponthe first casing and to be held thereto and to a capepiece by a suitableclutch==in the present instance a split ring and screw-sleeve-zand thedrill-bits are pro! -jected from the upper end of the casing'byasuitable spring,- so that the entire set of drills can be seen and theone desired selected. When the casing is closed, the tool is perfectlyrigid and can be used as an ordinary spring-drill.

I claim as my inventionl. The combination in a magazine for drills,disc., of a central casing or support, a cap thereon, a magazine-casingarranged to slide on the central casing, and means for securing themagazine-casing to the central casing, substantially as described.

2. The combination in a spring-drill, of a casing, spring-drillmechanism within the casing, a second casing arranged to slide upon theirst casing and carrying the magazine for the drill-bits, an overhangingcap on the firstmentioned casing, and means for holding the magazine tothe cap, substantially as described.

3. The combination in a magazine springdrill, of the casing,spring-drill mechanism within the casing, a magazine-casing arranged toslide upon the rst mentioned casing, means for securing themagazine-casing to the fixed casing, and a spring-platform arranged toproject the drill-bits when the magazine is detached from the cap,substantially as described.

4. The combination of a casing, spring-drill mechanism within thecasing, an overhanging cap secured to the end of the casing, amagazine-casing arranged to slide on the fixed casing, a screw-sleevearranged to screw onto the end of the magazine-casing, a split ringmounted between the said sleeve and the casing and acting as a clutch tosecure the magazine-casing to the fixed casing, said magazinecasingarranged to hold a series of drill-bits, substantially as described.

5. The combination of a spring-drill, a tubular casing, a tubular steinarranged to slide in said casing, a fixed spindle secured to the saidcasing and having a spiral groove therein, a nut engaging with saidspirally-grooved spindle and secured to the tubular stem, and a springmounted within the said stem, substantially as described.

G. The combination in a spring-drill, of a tubular casing, a tubularstem arranged to slide in said casing, a fixed spindle secured to thesaid casing and having a spiral groove therein, a nut engaging with saidspirallygrooved spindle and secured to the tubular stem, a springmounted within the said stem,- with a magazine-casing mounted on theoutside of the fixed casing, and means for securing the magazine-casingto the ixed casing; the cap of the iixed casing forming the cap of themagazine, substantially as described.

7. The combination in a spring-drill, of a tubular casing, aspirally-grooved spindle hung loosely within the casing, a hollow stemarranged to carry a tool, a nut on said stem engaging the spindle, and aspring for projecting the stem, substantially as described.

8. The combination in a spring-drill, of a tubular casing, a capthereon, a spirallygrooved spindle within the cap, a transverse pin fromwhich the spindle is loosely hung, a hollow stem, a nut thereon engagingthe spindie, and a spring for projecting said stem, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ZAOHRY T. FURBISH.

Witnesses:

WILL. A. BARR, Jos. H. KLEIN.

